Heating element for electric cooking and heating apparatus



Nov. 13, 1934. EGGER HEATING ELEMENT FOR ELECTRIC COOKING AND HEATING APPARATUE Filed June 1,. 1931 .I/WWWWW/ ,f I Vim p J 1 l J Patented Nov. 13, 1934 OFFICE nss'mvc. music: so: nmc'nuc coonmd sun nnsrnvc. msasrus Application June 1, m1, and No. 541,411: In Germany February 23, 1931 1 (Jll-lm. (Cl. 219-19) invention relates to an electric heating An embodiment of the invention is illustrated by way of example in the accompanying drawing in which:

Fig.1showsacookingapparatusincross aresoconstructedthatwhen fitted together they forms. U-shaped channel. In this channel the spirallywotmdheatingwirehisplacedsothat itextendstwicethroughtheheatingelementy of the heating element. The metal openatoneendsothattheheating canbeinsertedorpulledout through end. The pulled out heating elements these longitudinalpartssothat the heatingwirehisexpoeedandcaneasilybeexis burned through. The rods or soarrangedsidebysidethatthey formagridlikepla Theoutercontourof thisgridlike'plate apart and held apart by suitable distance pieces. The rods or their metal casings f are preferably rigidly welded or otherwise fixed on the bearing point of the frame wall. Transverse supports 1 are also provided for affording additional support for the rods. These transverse supports are preferabLv of triangular or other suitable cross section and form only an edge support for the rods so that the least possible quantity of heat is imparted'to these transverse supports. On one side of the frame a a box b is fitted into which the open ends of the rods project. The terminals for the individual rods are arrangedinthisboxb. Theotherendsoithe rods does not extend right unto the opposite wall of the frame, so asto allow therods to expand during the heating. The'heating wires h of the individual incandescent rods are shown series connected in the drawing and the wires between every two rods are interrupted and detachably connected so that each rod can be separately exchanged. It is evident that the rods might also be connected in a similar manner in parallel'in the feed circuit. The box b is closed by a cover of insulating material so that the connecting wires are accessible. As the current flows to and from every incandescent rod, 9. very quick and uniform heating occurs. The grid like arrangement of the incandescent rods is suitable as supporting surface for the cooking vessel and for any article or material to be heated, and especially also as grill.

I claim:

An electric heating element for electric cooking and heating pparatus, comprising in combination a rod-shaped metal sleeve open at one end and closed at the other end, three insulating rods made of ceramic material inserted in a plane side by side in said metal sleeve and filling the same, the outer rods each having a longitudinal groove on its side adjacent said middle rod, said middle rod being shorter than the two outer rods and having two-longitudinal grooves one on each side forming with the grooves in said outer rods passages of circular cross-section, a coiled resistance wire in said passages and bent around the inner end of said middle rod and adapted to be removed by pulling out said middle rod.

LEOPOLD EGGER. 

